Heiskanen exited last Tuesday's 4-3 win over the Vegas Golden Knights in the third period with 19:50 time-on-ice after Mark Stone made contact with his knee in an awkward collision. Before his injury, Heiskanen had five points (0G / 5A) during a five-game point streak. His long-term absence is a crushing blow for a Stars club that he leads in ice-time (25:10). Thomas Harley has emerged at the quarterback on the Stars' top powerplay unit since Heiskanen has been sidelined.
